Experts in Dense Phase
Pneumatic Conveying

Serving Customers Worldwide

Engineering with Efficiency

About Us

Macawber Engineering, Inc. specializes in the design and engineering of low velocity, dense phase pneumatic conveying and bulk handling processes.

True to our core business for over 40 years with thousands of installations, we offer long term, reliable and efficient solutions to process industries worldwide.

What is Dense Phase Pneumatic Conveying?

Dense Phase

Dense phase pneumatic conveying is the high pressure (>15psi), low velocity (2-15 feet/sec) transfer of dry, bulk materials. Material is gently conveyed using compressed gas or nitrogen through the convey pipe in a continuous dense phase, short slug, or bed flow below the saltation velocity which is where the material is lifted into the airstream.

Our Approach

Macawber Engineering differentiates itself from the market by the simplicity and highly reliable performance of its systems. The Dome Valve®, our robust filling valve, originally developed and patented (US patent 4,137,935 | 5,642,751) by us, is an integral part of our material transfer philosophy. Due to its unique design, we are able to control conveying regimes reliably and use small pressure vessels. Moreover, our proven approach provides an efficient and dependable transfer process without the use of air boosters.